Hiroshi (Goro Inagaki ) makes makes high-grade charcoals at a charcoal kiln that he inherited from his father. He has a wife (Chizuru Ikewaki) and a son going through a rebellious phase. Hiroshi is indifferent to his family. One day, Hiroshi's ex-friend Eisuke (Hiroki Hasegawa) comes back to his hometown. Eisuke is a former self-defense official.

After Hiroshi learns about Eisuke's past, he decides to take his job and family more seriously.